<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	out.print("aaa"+"<br>");
	out.print("获取缓存区大小："+out.getBufferSize()+"<br>");
	out.print("输出aaa后缓存区还没使用的字符数："+out.getRemaining()+"<br>");
	out.print("bbb"+"<br>");
	out.print("输出bbb后缓存区还没使用的字符数："+out.getRemaining()+"<br>");
	out.flush();
	out.print("刷新缓存后缓存区还没使用的字符数："+out.getRemaining()+"<br>");
%>
</body>
</html>